package com.liang.gaoji;

import java.util.concurrent.locks.ReentrantLock;

/**
 * @Author:liangli
 * @Date:2020/11/21 14:33
 */
//测试lock锁
public class TestLock {
    public static void main(String[] args) {
        TestLock2 testLock2 = new TestLock2();
        new Thread(testLock2).start();
        new Thread(testLock2).start();

        new Thread(testLock2).start();

    }
}

class TestLock2 implements Runnable {
    int ticketNums = 10;

    private final ReentrantLock lock = new ReentrantLock();

    @Override
    public void run() {
        while (true) {
            try {
                lock.lock();
                if (ticketNums>0){
                    try {
                        Thread.sleep(1000);
                    } catch (InterruptedException e) {
                        e.printStackTrace();
                    }
                    System.out.println(ticketNums--);
                }else {
                    break;
                }

            }finally {
                lock.unlock();
            }
        }
    }
}










